| Suitability evaluation and regionalization of maize planting in Hedong Area of Gansu Province |
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| DOI：10.7606/j.issn.1000-7601.2018.03.34 |
| Key Words: maize planting climatic factor suitability evaluation regionalization Hedong area Gansu Province |
| Author Name | Affiliation | | XU Xiao-ming | Key Laboratory of Disaster Monitoring and Mechanism Simulating of Shaanxi Province, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, China | | XU Yu-xia | Key Laboratory of Disaster Monitoring and Mechanism Simulating of Shaanxi Province, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, China | | DONG Qi | Key Laboratory of Disaster Monitoring and Mechanism Simulating of Shaanxi Province, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, China | | QIN Shao-wei | Key Laboratory of Disaster Monitoring and Mechanism Simulating of Shaanxi Province, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, China | | HUO Xuan-lin | Key Laboratory of Disaster Monitoring and Mechanism Simulating of Shaanxi Province, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, China |
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| Abstract: |
| Based on data from 17 typical weather stations from 1951 to 2015 in Hedong area of Gansu Province, spatial distribution characteristics of average temperature in the past 65 years, average precipitation of growth period of maize in 4~9 month, total amount of ≥10℃ accumulated temperature and the annual average number of frost free days were analyzed by using mean value method via Origin8.0 software.The suitability of maize planting in different stations was evaluated according to the temperature, the number of frost free days and precipitation data during growth period. Combining the analysis of the main climatic factors affecting the suitability of maize planting in the study area with GIS spatial analysis technology,maize planting suitability regionalization in Hedong area were obtained .The results showed following: (1) The overall characterization of the suitability of maize planting in the study area decreased from East to West. (2) The most suitable area was the smallest and densely distributed in the southern region of Pingliang city and Qingyang city, including Zhengning County, Ningxian County, Jingchuan County, Lingtai County, Chongxin County and Qingyang city. (3) The suitable areas were mainly distributed in the large part of Longdong Loess Plateau, Qin Ba mountain area in Longnan (except Liangdang County) and most of Linxia Hui Autonomous Prefecture. (4) The sub suitable areas were concentrated in the Loess Plateau of Longzhong, and sporadic distribution such as Huan County, Liangdang County, Hezheng County and Kangle County. (5) The unsuitable area was mainly distributed in the Gannan Plateau. |
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